`Object.prototype.__proto__` has been implemented by most JS
engines to give R/W access to prototype chains, well before it made
it into the standard. JerryScript has decided not to implement it,
exactly because it was not part of ES 5.1. The only fully
ES5.1-compatible way of accessing the prototype chain is
`Object.getPrototypeOf` for reading.
However, ES2015 defines `Object.setPrototypeOf` for rewriting the
prototype chain, and JerryScript has now an ES2015 subset profile.
So, this commit adds its implementation to JerryScript.
Note, this commit does _not_ add `Object.prototype.__proto__`,
since that is in the Annex B of ES2015 specification, which is
optional for non-web-browser hosts.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
For negative out-of-range time values, ecma_date_year_from_time
fell into an infinite loop. (Moreover, for positive out-of-range
time values, it returned an incorrect year.) This patch fixes the
helper to return NaN in these cases (and ensures that its call
sites are prepared for NaN values).
Fixes#1657.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
It is a workaround fix. The problem comes from the inaccuracy of the double rounding.
JerryScript-DCO-1.0-Signed-off-by: Robert Sipka rsipka.uszeged@partner.samsung.com
Those tests are related the actual daylight saving adjustment.
Related issue: #1661
JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com
Also make sure the bytelength = arraylength << shift will not overflow
Fix issue #1616
JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com
* Fixed Doxygen issues
* Updated Doxygen config
* Added new script to test whether doxygen generation was successful or not
* Added to Travis CI
JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com
Add Uint8Array, Int16Array Uint16Array, Int32Array, Uint32Array, Float32Array, Float64Array and Uint8ClampedArray. Support the conversion between any pairs of those types.
JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com
compiled using non-GCC compilers.
This included adding an initialization to a variable that looks(!)
like it can reach a use before being initialized (b/c we turned
JERRY_UNREACHABLE into a nop) -- an example:
int foo;
switch (value_can_only_be_one_or_two)
case 1:
case 2:
foo = 5;
default:
JERRY_UNREACHABLE();
x = foo +1;
...the compiler assumes that the path can go through the default case,
which leaves the value of foo undefined.
JerryScript-DCO-1.0-Signed-off-by: Timothy Harvey t-harvey@ti.com
After 378d7f7 it is not used in the codebase and can be eliminated.
JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com
* add %TypedArray% intrinsic object
* implement Int8Array
* will implement other types and prototype functions
in the following patches.
JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com
Rework date to string conversion, and remove nan checks from inline
functions. Furtermore some inline functions are changed to normal
functions.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
Copy the characters of a string into a specified utf-8 string buffer.
JerryScript-DCO-1.0-Signed-off-by: Robert Sipka rsipka.uszeged@partner.samsung.com
Doxygen reported a few issues, which are fixed by this patch:
* ArrayBuffer-related documentation group names and titles were
incorrect.
* Some Date-related helper functions used incorrect parameter
documentation syntax.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
Although many Math built-in functions have a similar structure
these code paths were implemented as separate C functions.
After this patch only one common dispatcher remains which shares
the common code paths of different built-in functions. This
reduces the binary size by 1 Kbyte.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
It's generally considered a bad programming practice to have function declarations without parameter names.
This is another legacy from the early days of the project. Fix in one go to minimize history disruption.
Used a custom clang-tidy check to create the bulk of the change.
JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller t.scheller@samsung.com
Extern keywords on function declarations/definitions provide no additional value since function declarations/definitions default to external linkage in C99, e.g. removing them won't change the semantics of the program.
The extern keywords were essentially a legacy from the early days of the project. This commit cleans this up across the whole codebase in one go to minimize history disruption.
The bulk of the changes in this commit were produced by a custom clang-tidy checker.
Note that variables declarations carrying the extern keyword are untouched by this commit since there the presence of the keyword actually has an impact on the semantics of the program.
JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller t.scheller@samsung.com
Before this patch each built-in routine had a separate C
function. Although these functions shared a lot of common
operations compilers cannot eliminate these code duplications
in the final binary code. This patch introduces a single C
function which handles all date prototype routines. Each
shared code block has only one binary represenation.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
The JSON parser required a zero terminated writable copy of
the original string. The requirement is eliminated from the
project to reduce peak memory consumption.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
Furthermore the maximum number of properties is increased to 96.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
Since the project is now hosted at the JS Foundation we can move to unified copyright notices for the project.
Starting with this commit all future contributions to the project should only carry the following copyright notice (except for third-party code which requires copyright information to be preserved):
"Copyright JS Foundation and other contributors, http://js.foundation" (without the quotes)
This avoids cluttering the codebase with contributor-specific copyright notices which have a higher maintenance overhead and tend to get outdated quickly. Also dropping the year from the copyright notices helps to avoid yearly code changes just to update the copyright notices.
Note that each contributor still retains full copyright ownership of his/her contributions and the respective authorship is tracked very accurately via Git.
JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller t.scheller@samsung.com
The ecma_date_make_day() handled any date in October on leap years incorrectly,
which was mentioned in issue #1836. The ecma_date_week_day() returned minus values
when return week_day before 1970 years which was also incorrect.
This change solves these bugs. In addition, this enhances the algorithm of accessing 'the ym-mn-1'
by replacing binary search to simple computation at ecma_date_make_day().
JerryScript-DCO-1.0-Signed-off-by: Hayun Lee lhy920806@gmail.com
Property names were always required a string reference which consumed
a large amount of memory for arrays. This patch reduces this consumption
by directly storing the value part of certain strings.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This change allows easier access to array length which improves
the performance of inserting new items into an array and there
is no need to allocate length strings anymore. The trade-of is
that array length cannot be cached anymore.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This patch reduces memory consumption for strings such as "0" or "123"
by 8 bytes and "4294967295" by 16 bytes. The hash computation is changed
for using the lower 16 bits for these strings which is much faster than
converting the value to string first and compute the hash. The trade-of
is a small overhead when strings are created or concatenated.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
Legacy implementation made incorrect assumptions on how many bits
of useful information is returned by libc's `rand()`. If `RAND_MAX`
had more than 16 useful bits, it assumed that `rand()` could return
32 useful random bits. However, e.g., jerry-libc's `RAND_MAX` is
`0x7fffffff`, which denotes 31 useful bits only. The consequence
was that `Math.random()` covered only the lower half of the
standard-mandated `[0,1)` interval.
This path fixes the error and always uses the exact value of
`RAND_MAX` to compute the random value, which will thus fully cover
`[0,1)`.
Fixes#1414
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
Some test cases were failed with enabled show-opcodes build option.
Example source:
"98765".replace(76)
print ("\ud801\udc00".replace("\ud801", "#") === "#\udc00");
JerryScript-DCO-1.0-Signed-off-by: Robert Sipka rsipka.uszeged@partner.samsung.com
The new code does not use value collections which reduces the argument array size by half.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
Class and value internal properties are always exists for primitive
types (e.g. Boolean, Regex) so they can be stored right after the
object. This improve property access (since internal properties are
searched by a slow linear algorithm) and reduces memory consumption,
since only 8 byte is allocated for these two properties instead of
16 which is the size of a property pair.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
"ecma_builtin_number_prototype_helper_round" is used by following
functions:
* ecma_builtin_number_prototype_object_to_fixed
* ecma_builtin_number_prototype_object_to_exponential
* ecma_builtin_number_prototype_object_to_precision
The current implementation does not support currying numbers and will
produce illegal digit for some test cases. For example, the result of
"0.95.toFixed(1)" is "0.:".
This patch fixs the issue, however the implementation of "toFixed" is
still problematic, at least not meet section 15.7.4.5 8.a of the
specification. The related test case is:
* assert((0.995).toFixed(2) === "0.99");
* assert((9.995).toFixed(2) === "9.99");
Reference:
* http://www.ecma-international.org/ecma-262/5.1/#sec-15.7.4.5
JerryScript-DCO-1.0-Signed-off-by: Yanhui Shen shen.elf@gmail.com
Properties are changed to a type and value pair instead of a pointer to an internal
representation. Functions such as ecma_op_object_get_[own_]property do not
return with property pointers anymore.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
The ecma_op_object_get_[own_]property calls should be phased out from
the project eventually and virtual properties should be introduced instead.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
Don't increment the current position in case of a continuation byte.
JerryScript-DCO-1.0-Signed-off-by: Robert Sipka rsipka.uszeged@partner.samsung.com
